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Swift-XRT spectra of GRB 120811C

Last updated after receiving ObsID 00530689002, version 15

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 2.671 (GCN 13628)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 74 to 99116 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+111 s

N_H (Galactic)	2.23 × 10²⁰ cm^-2
N_H (intrinsic)	1.0 (+0.3, -0.3) × 10²² cm^-2
z of absorber	2.671
Photon index	2.540 (+0.103, -0.097)
Flux (0.3-10 keV) (Observed)	4.92 (+0.24, -0.22) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.6 (+0.4, -0.4) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.58 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.48 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	309.89 (382)
Spectrum exposure	137 s

PC mode. Mean photon arrival: T0+10710 s

N_H (Galactic)	2.23 × 10²⁰ cm^-2
N_H (intrinsic)	1.2 (+0.6, -0.5) × 10²² cm^-2
z of absorber	2.671
Photon index	1.81 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	7.2 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.2 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.64 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.15 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	293.06 (360)
Spectrum exposure	11.4 ks

Late Time spectrum (T0 + 11469 to 99116 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+26860 s

N_H (Galactic)	2.23 × 10²⁰ cm^-2
N_H (intrinsic)	1.84 (+1.05, -0.92) × 10²² cm^-2
z of absorber	2.671
Photon index	2.14 (+0.21, -0.20)
Flux (0.3-10 keV) (Observed)	1.65 (+0.21, -0.18) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.14 (+0.24, -0.21) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.08 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.98 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	202.92 (212)
Spectrum exposure	10.1 ks